National Dental Examining Board of Canada (NDEB) Practice Exam 2025 - Free NDEB Practice Questions and Study Guide

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What is the likely diagnosis for a patient with 3 weeks history of prolonged tooth pain to hot and cold, which changed to moderate pain on biting with a dull spontaneous ache relieved by cold?

Acute periradicular abscess

Chronic periradicular abscess

This is because an acute periradicular abscess typically presents with severe pain to hot and cold that is constant, while chronic periradicular abscess causes moderate pain on biting with a gradual onset. Additionally, pulpal necrosis would present with no relief from cold, and dental caries would most likely have cavities present rather than just prolonged tooth pain.

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Pulpal necrosis

Dental caries

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